Structure of a door frame

ABSTRACT

A structure of a door frame including four rails each formed with a first passage at one side, a second passage at an intermediate portion, a third passage at another side, a first slot at an edge, a second slot at a front side, a third slot at the front side, a fourth slot at another side, and a raised portion at a rear side, four right-angled connectors formed with a first shoulder at one side, a central block, and a second shoulder at another side adapted to be inserted into the first, second and third passages, four auxiliary locking members each fixedly installed into the third passage and having a slot for passage of electrical wires, four fastening posts each formed with a first groove at one side and a second groove at another side adapted to engage with the raised portion of the rails and right-angled connectors, and covering members arranged on the inner sides of the frame.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to an improvement in the structure of a doorframe.

2. Description of the Prior Art

It has been found that the conventional door frames can be roughlydivided into five kinds. FIG. 1 illustrates a most commonly used woodendoor. However, such a door will corrode and be easily deformed in dampcondition. Hence, a door made of fiber reinforced plastic (see FIG. 2)has been developed to obviate these drawbacks, but the door will producepoison gas in case of fire and cannot be recycled. The aluminum door(see FIG. 3) is too dull in appearance and cannot effectively separatesound from one side to the other. FIG. 4 shows a metal door which is tooexpensive in cost. FIG. 5 illustrates a specially designed wooden doorwhich is inflammable and will easily corrode in damped condition.

Therefore, it is an object of the present invention to provide astructure of a door frame which can obviate and mitigate theabove-mentioned drawbacks.

SUMMARY OF THE INVENTION

This invention relates to an improvement in the structure of a doorframe.

It is the primary object of the present invention to provide a structureof a door frame which is fit for mass production.

It is another object of the present invention to provide a structure ofa door frame which is easy and cheap to assemble.

It is still another object of the present invention to provide astructure of a door frame which is simple and sturdy in construction.

It is still another object of the present invention to provide astructure of a door frame which is durable in use.

It is a further object of the present invention to provide a structureof a door frame which can be placed at the market at a very low cost.

Other objects of the invention will in part be obvious and in parthereinafter pointed out.

The invention accordingly consists of features of constructions andmethod, combination of elements, arrangement of parts and steps of themethod which will be exemplified in the constructions and methodhereinafter disclosed, the scope of the application of which will beindicated in the claims following.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 illustrates a first prior art door;

FIG. 2 illustrates a second prior art door;

FIG. 3 illustrates a third prior art door;

FIG. 4 illustrates a fourth prior art door;

FIG. 5 illustrates a fifth prior art door;

FIG. 6 is a perspective view of the present invention;

FIG. 7 is a sectional view of the present invention;

FIG. 8 is an exploded view of the present invention;

FIG. 9 shows the engagement between the supporter and the lower end ofthe inverted U-shaped frame;

FIG. 10 shows the connection between the auxiliary locking member andthe rail;

FIG. 11 illustrates how to engage the fastening post with the frame;

FIG. 11A illustrates another side of the fastening post;

FIG. 12 illustrates how to engage the covering member with the frame;

FIG. 12A is an exploded view of the covering member;

FIG. 13 illustrates how to engage a covering member with the rail; and

FIGS. 13A-13E illustrate different kinds of decorative members.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

For the purpose to promoting an understanding of the principles of theinvention, reference will now be made to the embodiment illustrated inthe drawings. Specific language will be used to describe same. It will,nevertheless, be understood that no limitation of the scope of theinvention is thereby intended, such alternations and furthermodifications in the illustrated device, and such further applicationsof the principles of the invention as illustrated herein beingcontemplated as would normally occur to one skilled in the art to whichthe invention relates.

With reference to the drawings and in particular to FIGS. 6 and 7, thedoor frame according to the present invention mainly comprises rails 1,right-angled connectors 2, auxiliary locking members 4, fastening posts5 and covering members 6.

As shown in FIG. 8, one of the rails 1 is used as the top rail, whilethe other two as the left and right side rails respectively. The rail 1is formed with a first passage 121 at the left side, a second passage122 at the intermediate portion, a third passage 123 at the right side,a first slot 111 at the left edge, a second slot 112 at the front side,a third slot 113 at the front side, a fourth slot 114 at the right edge,and a raised portion 13 at the rear side. The right-angled connector 2is formed with a left shoulder 221, a central block 222 and a rightshoulder 223 which are adapted to be inserted into the first passage121, the second passage 122 and the third passage 123 of the rail 1respectively. Hence, an inverted U-shaped frame can be easily set up byconnecting the three rails 1 with two right-angled connectors 2. Theinner side of the right-angled connector 2 has a recess 211 and twoholes 212 and 213 for the passage of electrical wires (not shown).

Referring to FIG. 9, the lower ends of the inverted U-shaped frame aresupported by two supporters 3. The supporter 3 has a projection 311 atthe intermediate portion and a lug 312 at both side portions and isadapted to engage with the lower end of the inverted U-shaped frame. Thelug 312 of the supporter 3 has a circular hole 3121 so that thesupporter 3 can be fixedly mounted on the ground by screws 32.

Looking now at FIG. 10, the auxiliary locking member 4 is fixedlyinstalled into the passage 123 of the rail 1 by screws 42. The auxiliarylocking member 4 has a slot 41 for the passage of electrical wires (notshown).

As illustrated in FIGS. 11 and 11A, the fastening post 5 is formed witha first groove 511 at one side and a second groove 512 at the oppositeside. The first groove 511 and the second groove 512 are of differentdepths and adapted to be fixed on the raised portion 13 of the invertedU-shaped frame by screws 52. The frame may be engaged with the first orsecond groove 52 of the fastening post 5 as required. The fastening post5 may be made of alloy, fiber reinforced plastic or the like.

Referring to FIGS. 12 and 12A, the covering member 6 includes a basemember 61 made of alloy of fiber reinforced plastic and a housing 8fixedly mounted thereon. The inner side of the covering member 6 isprovided with elongated protuberances 611, 612, 613 and 614 adapted tobe engaged with the slots 111, 112, 113 and 114 of the rail 1.

As shown in FIGS. 13, 13A, 13B, 13C, 13D and 13E, the frame may bedirectly engaged with any surface materials 811, 812, 813, 814, 815,816, 817 or 818. A rear covering member 7 is engaged with the rail 1,with its hook-like projections 711 and 712 engaged with the slots 113and 114 of the rail 1.

The invention is naturally not limited in any sense to the particularfeatures specified in the forgoing or to the details of the particularembodiment which has been chosen in order to illustrate the invention.Consideration can be given to all kinds of variants of the particularembodiment which has been described by way of example and of itsconstituent elements without thereby departing from the scope of theinvention. This invention accordingly includes all the meansconstituting technical equivalents of the means described as well astheir combinations.

I claim:
 1. A structure of a door frame comprising:four rails eachformed with a first passage at one side, a second passage at anintermediate portion, a third passage at another side, a first slot atan edge, a second slot at a front side, a third slot at the front side,a fourth slot at another side, and a raised portion at a rear side; fourright-angled connectors formed with a first shoulder at one side, acentral block, and a second shoulder at another side adapted to beinserted into said first, second and third passages; auxiliary lockingmembers each fixedly installed into said third passage and having a slotfor passage of electrical wires; four fastening posts each formed with afirst groove at one side and a second groove at another side adapted toengage with the raised portion of said rails and right-angledconnectors; and covering members arranged on inner sides of said railsand right-angled connectors.